CN105586116B - Excellent bentonite grease composition of a kind of Wear vesistance and preparation method thereof - Google Patents
Excellent bentonite grease composition of a kind of Wear vesistance and preparation method thereof Download PDFInfo
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Abstract
The invention discloses the bentonite grease compositions that a kind of Wear vesistance is excellent, and on the basis of the weight of lubricant composition, the lubricant composition includes following components：The additive of the lubricating base oil of 65 95 weight %, the bentonite thickening agent of 5 35 weight % and 0.1 15 weight %, the additive contain the compound of structure shown in formula (I).The present invention also provides the preparation methods of the excellent bentonite grease composition of Wear vesistance.The lubricant composition of the present invention drastically increases the anti-attrition ability and oxidation resistance of lubricating grease, while can reduce antirust agent usage amount due to containing multipurpose additive.The lubricating grease of the present invention has splendid inoxidizability, colloid stability, water proofing property and antifriction performance etc., can be competent in the harsh working condition such as high temperature, high speed, high load capacity, more water.
Description
Technical field
The present invention relates to lubricating grease fields, and in particular, to a kind of excellent swollen of Wear vesistance containing special additive
Native lubricant composition of profit and preparation method thereof.
Background technology
Bentonite grease is the important nonsoap grease of the one kind prepared with modified alta-mud multigrade oil.Swelling
Native lubricating grease not only has good heat resistance, while has good mechanical stability and colloid stability, heat-resisting bentonite
Lubricating grease and extreme-pressure bentonite grease lubricant be widely used in metallurgical equipment, casting and steel rolling equipment, mine heavy duty equipment,
Large-scale truck, papermaking equipment, cement manufacture plant, high temp tunnel cellar car, airplane wheel bearing, railway diesel locomotive, pipe
The lubrication of the equipment such as formula thread seal sub-assembly.
Smith in 1934 has carried out the exchange reaction of sodium bentonite and organoammonium ions pioneering research, and synthesizes
Some organobentonites.Jorda in 1949 thinks that different alkyl have large effect to montmorillonite construction interlamellar spacing.In recent years very
More patents have inquired into formula, production technology and the performance of bentonite grease.CN1504552 uses oil based on vegetable oil, amine
Class or amine and phenols mixing antioxidant, are prepared for a kind of biodegradable lubricating grease, meet environmental requirement；CN1197107
Using oil based on polyalphaolefin, phenyl-β-naphthylamine and di-iso-octyldiphenylamine are antioxidant and add in antirust agent, extreme pressure agent, divide
Powder is prepared for a kind of aviation bentonite grease, which has the compatibility of good high and low temperature and rubber parts and dash forward
The antioxidant that goes out, extreme pressure property；CN101886017 is prepared for a kind of bentonite grease using furfural refining oil, which is additionally added
Antioxidant and pigment make the bentonite grease have good oxidation stability and a corrosion resistance, and pigment plus
Enter the function that can be played and assign product particular appearance and auxiliary difference lubricating grease species；CN101240208 passes through to technique
Improve, the selection to antirust agent so that bentonite grease obtained have on thickening ability and rustless property it is very big into
Step, water repelling property is also improved, but is not directed to Wear vesistance.
Recently as the development of modern industry, the industrial departments such as bearing, automobile, printing and dyeing, mine, metallurgy, aerospace are to profit
The quality of consistent lubricant proposes increasingly harsher requirement, and many lubricant housings are all disposably to fill fat, in the process of running no longer
Supplement is replaced, so higher to the abrasion resistance requirement of fat.
The content of the invention
The purpose of the invention is to meet the high request to the abrasion resistance of lubricating grease, it is excellent to provide a kind of Wear vesistance
Bentonite grease composition.
The present inventor has found that the additive in lubricant composition contains structure shown in formula (I) under study for action
Multipurpose additive：
It can make lubricant composition that there are the performances such as excellent anti-attrition is anti-oxidant.
Therefore, to achieve these goals, on the one hand, the present invention provides the bentonite lubrications that a kind of Wear vesistance is excellent
Oil/fat composition, on the basis of the weight of lubricant composition, the lubricant composition includes following components：65-95 weight %
Lubricating base oil, the bentonite thickening agent of 5-35 weight % and the additive of 0.1-15 weight %, the additive contains formula
(I) compound of structure shown in：
Preferably, on the basis of the weight of lubricant composition, the lubricant composition includes following components：70-90
The additive of the lubricating base oil of weight %, the bentonite thickening agent of 8-30 weight % and 0.5-10 weight %.
Preferably, on the basis of the weight of lubricant composition, the content of the compound of structure shown in formula (I) is 0.1-10
Weight %, more preferably 1-5 weight %.
On the other hand, the present invention provides a kind of preparation method of the excellent bentonite grease composition of Wear vesistance,
The described method includes：
(1) lubricating base oil of 1/2-2/3 and bentonite thickening agent are added in fat kettle processed, are uniformly mixed；
(2) dispersant is added in, and is quickly stirred, until forming grease structure in kettle；
(3) 50-65 DEG C of holding 5-20min is warming up to, remaining base oil and additive is added, is uniformly mixed；
(4) ground 2-3 times by three-roller；
Wherein, on the basis of the weight of lubricant composition, the dosage of lubricating base oil is 65-95 weight %, bentonite
The dosage of thickening agent is 5-35 weight %, and the dosage of dispersant is 2-10 weight %, and the dosage of additive is 0.1-15 weight %,
The additive contains the compound of structure shown in formula (I)：
Preferably, on the basis of the weight of lubricant composition, the dosage of lubricating base oil is 70-90 weight %, swelling
The dosage of native thickening agent is 8-30 weight %, and the dosage of additive is 0.5-10 weight %.
Preferably, on the basis of the weight of lubricant composition, the dosage of the compound of structure shown in formula (I) is 0.1-10
Weight %, more preferably 1-5 weight %.
The lubricant composition of the present invention due to containing multipurpose additive, drastically increase lubricating grease anti-attrition ability and
Oxidation resistance, while antirust agent usage amount can be reduced.There is the lubricating grease of the present invention splendid inoxidizability, colloid to stabilize
Property, water proofing property and antifriction performance etc., the harsh working condition such as high temperature, high speed, high load capacity, more water can be competent in.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Fig. 1 is the reaction equation of (a) the step of preparing multipurpose additive.
Fig. 2 is the reaction equation of (b) the step of preparing multipurpose additive.
Fig. 3 is the hydrogen spectrum spectrogram of multipurpose additive prepared by preparation example.
Fig. 4 is the carbon spectrum spectrogram of multipurpose additive prepared by preparation example.
Fig. 5 is the mass spectrogram of multipurpose additive prepared by preparation example.
Specific embodiment
The specific embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The present invention provides the bentonite grease composition that a kind of Wear vesistance is excellent, with the weight of lubricant composition
On the basis of, lubricant composition includes following components：Lubricating base oil, the bentonite of 5-35 weight % of 65-95 weight % is thick
The additive of agent and 0.1-15 weight %, additive contain the compound of structure shown in formula (I)：
In the present invention, what multipurpose additive referred to is the compound of structure shown in formula (I).
In the present invention, it is preferable that on the basis of the weight of lubricant composition, the lubricant composition is included with the following group
Point：The additive of the lubricating base oil of 70-90 weight %, the bentonite thickening agent of 8-30 weight % and 0.5-10 weight %.
In the present invention, on the basis of the weight of lubricant composition, the content of the compound of structure is preferably shown in formula (I)
0.1-10 weight %, more preferably 1-5 weight %.
It is contemplated that by the additive in bentonite grease composition contain the compound of structure shown in formula (I) and
Goal of the invention is realized, even if bentonite grease composition has the performances such as excellent anti-attrition is anti-oxidant.Therefore, for bentonite
The selection of each conventional constituents, does not limit specifically in lubricating grease.
In the present invention, lubricating base oil can be lubricating base oil commonly used in the art, such as can be mineral oil,
At least one of vegetable oil and synthetic oil.100 DEG C of kinematic viscosity of lubricating base oil are preferably 4-60mm2/ s, more preferably 6-
32mm2/s.For the specific species of mineral oil, vegetable oil and synthetic oil, also there is no particular limitation, and it is normal that this field may be employed
Mineral oil, vegetable oil and synthetic oil, for example, mineral oil can select paraffinic base, cycloalkyl, intermediate base series, vegetable oil
Can be at least one of castor oil, rapeseed oil, peanut oil and soybean oil etc., synthetic oil can be poly-a-olefin oil (PAO),
At least one of Esters oil, fluorocarbon oil and ether system synthetic oil etc..
In the present invention, bentonite thickening agent is preferably organobentonite.
In the present invention, since the multipurpose additive of structure shown in formula (I) and other additives have preferable compatibility, because
This, according to the use needs of lubricating grease, additive of the invention can also contain other antioxidant, extreme pressure anti-wear additives and antirust
At least one of agent.
In the present invention, for other antioxidant, extreme pressure anti-wear additives, antirust agent species and content without particular/special requirement, can
With using the species and content of this field routine.For example, antioxidant can be arylamine kind antioxidant, be preferably diphenylamines, phenyl-
At least one of alpha-naphthylamine and di-iso-octyldiphenylamine, more preferably di-iso-octyldiphenylamine, the content of antioxidant can account for
The 0.01-5 weight % of lubricant composition total weight, preferably 0.1-2.5 weight %；Extreme pressure anti-wear additives can be two thio dioxanes
Base trbasic zinc phosphate, two thio dialkyl amido formic acid molybdenums, two thio dialkyl amido lead formates, molybdenum disulfide, polytetrafluoroethylene (PTFE), two
At least one of butyl antimony dithiocarbamate, tungsten disulfide, selenium disulfide, fluorographite, calcium carbonate and zinc oxide, pole
The content of pressure antiwear additive can account for the 0.5-12 weight % of lubricant composition total weight, be preferably 0.5-5 weight %；Antirust agent
Can be barium mahogany sulfonate, petroleum sodium sulfonate, benzothiazole, benzotriazole, zinc naphthenate and alkenyl succinic acid at least
One kind, the content of antirust agent can account for the 0.01-4.5 weight % of lubricant composition total weight, be preferably 0.1-2 weight %.
In the present invention, the preparation method of the compound of structure preferably includes shown in formula (I)：
(a) aniline, sulfur chloride and 4- chloroanilines are reacted, generate the intermediate M shown in formula (II),
(b) the intermediate M and dimercapto -1,3,4- thiadiazoles that step (a) obtains is carried out nucleophilic in alkaline conditions to take
Generation reaction, generates the multipurpose additive shown in formula (I),
In step (a) of the present invention, the concrete mode that aniline, sulfur chloride and 4- chloroanilines react is preferably included：
(i) under an inert atmosphere, in the first solvent, aniline is fully reacted with sulfur chloride at -20-0 DEG C；
(ii) 4- chloroanilines are added in the reaction system of step (i), reacts 1-3h at 15-30 DEG C.
In the present invention, inert atmosphere can be the inert atmosphere of this field routine, such as can be by gases such as nitrogen, argon gas
It provides.
In step (i) of the present invention, the first solvent is preferably selected from dichloromethane, tetrahydrofuran, toluene, dimethylbenzene and dioxy six
At least one of ring, more preferably dichloromethane and/or tetrahydrofuran, are still more preferably dichloromethane.
In the present invention in step (i), fully reacted and refer to that the reaction was complete, i.e., reaction raw materials are reacted completely.
Method commonly used in the art may be employed to be monitored reaction, to confirm that the reaction was complete, such as thin layer chromatography may be employed
(TLC) or the methods of gas-chromatography, is monitored.
In step (ii) of the present invention, 1-3h is reacted at 15-30 DEG C, preferably after step (i) fully reaction, by reactant
The temperature of system is gradually increased to 15-30 DEG C, adds 4- chloroanilines and carries out reaction 1-3h.It, can be further under the preferable case
Improve reaction yield.
In step (ii) of the present invention, the feed postition of 4- chloroanilines is preferably to add in by several times, such as can divide 3-4 times and add
Enter.Under the preferable case, reaction yield can be further improved.When being added in for gradation, each addition can be identical,
Can not also be same, in order to easy to operate, preferably each addition is identical.
In step (ii) of the present invention, react 1-3h, stop reaction mode can be those skilled in the art it is contemplated that
Various modes, be quenched for example, quencher can be added in, quencher can be quencher commonly used in the art, such as can
Think saturated salt solution.
In the present invention, the dosage of aniline, sulfur chloride and 4- chloroanilines is substantially equimolar amounts, but aniline and sulfur chloride can
With appropriate excessive.The molar ratio of aniline, sulfur chloride and 4- chloroanilines is preferably 0.9-1.5：0.9-1.5：0.8-1.2.
It will be understood by those skilled in the art that in step (a) of the present invention, purer intermediate M, goes back in order to obtain
It needing to post-process the system after reaction, the mode of post processing can include washing, drying, solvent is removed under reduced pressure, for example,
By the reaction system after being quenched respectively with distilled water and saturated common salt water washing, then anhydrous calcium chloride is added at 15-30 DEG C
Or the drier such as anhydrous sodium sulfate, keep 10-60min.After being filtered to remove drier, at 0.01-0.05MPa, 40-60 DEG C
Solvent is removed, to obtain intermediate M.
In step (a) of the present invention, the reaction equation that aniline, sulfur chloride and 4- chloroanilines are reacted is as shown in Figure 1, figure
In 1, the first solvent is not construed as limiting the scope of the present invention using dichloromethane, purpose by way of example only.
In step (b) of the present invention, the condition of nucleophilic substitution preferably includes：Under an inert atmosphere, in the second solvent,
Dimercapto-1,3,4-thiadiazole, alkaline reagent and catalyst are mixed into 10-30min at 15-30 DEG C, then add in intermediate
M is fully reacted.I.e. alkaline condition is provided by alkaline reagent.
" inert atmosphere ", " fully being reacted " are as previously mentioned, details are not described herein.
In the present invention, intermediate M is preferably slowly added to, such as can be added in by several times, can generally divide 3-4 addition.
Under the preferable case, reaction yield can be further improved.When being added in for gradation, each addition can be identical, also may be used
With difference, in order to easy to operate, preferably each addition is identical.
In the present invention, the second solvent is preferably selected from dichloromethane, tetrahydrofuran, toluene, dimethylbenzene, N, N- dimethyl formyls
At least one of amine, more preferably dichloromethane and/or n,N-Dimethylformamide, are still more preferably N, N- dimethyl
Formamide.
In the present invention, alkaline reagent is preferably selected from least one of inorganic bases such as potassium carbonate, sodium carbonate, sodium methoxide.
In the present invention, catalyst is preferably potassium sulfate.
In step (b) of the present invention, the dosage of dimercapto-1,3,4-thiadiazole, alkaline reagent and intermediate M is substantially etc.
Mole, but dimercapto-1,3,4-thiadiazole and alkaline reagent can be suitably excessive.Dimercapto -1,3,4- thiadiazoles, alkalescence examination
The molar ratio of agent and intermediate M are preferably 0.9-3.0：0.9-5.0：0.8-1.5.
In step (b) of the present invention, the dosage of catalyst can be catalytic amount, with mole of dimercapto-1,3,4-thiadiazole
On the basis of number, the dosage of catalyst is preferably 5-100 moles of %, more preferably 10-50 moles of %.
In step (b) of the present invention, reaction equation such as Fig. 2 that dimercapto-1,3,4-thiadiazole and intermediate M are reacted
Shown, in Fig. 2, alkaline reagent does not form the scope of the present invention and limits using potassium carbonate, purpose by way of example only
System.
It will be understood by those skilled in the art that purer final product, i.e. multiple-effect of the invention add in order to obtain
Add agent, the method for the invention for preparing multipurpose additive, which preferably further includes, post-processes the system after reaction, the side of post processing
Formula can include washing, drying, solvent is removed under reduced pressure, for example, the system after abundant reaction to be poured into the acetic acid of 1-10 times of volume
In ethyl ester (or dichloromethane), respectively with distilled water and saturated common salt water washing, then anhydrous calcium chloride is added at 15-30 DEG C
Or the drier such as anhydrous sodium sulfate, keep 10-60min.After being filtered to remove drier, at 0.01-0.05MPa, 40-60 DEG C
Solvent is removed, to obtain final product.
Each step that the method for the compound of structure shown in formula (I) is prepared in the present invention preferably carries out under stiring, for
Mixing speed can be the mixing speed of this field routine, for example, mixing speed can be 100-800rpm without particular/special requirement.
In the present invention, for the first solvent and the second solvent amount without particular/special requirement, can be the solvent of this field routine
Dosage, this is known to those skilled in the art, and details are not described herein.
As described above, it is contemplated that structure shown in formula (I) is contained by the additive in bentonite grease composition
Compound and realize goal of the invention, even if lubricant composition has the performances such as excellent anti-attrition is anti-oxidant.Therefore, for swollen
Without particular/special requirement method commonly used in the art may be employed, for example, second aspect, sheet in the native preparation of greases method of profit
Invention additionally provides a kind of preparation method of the excellent bentonite grease composition of Wear vesistance, and this method includes：
(1) lubricating base oil of 1/2-2/3 and bentonite thickening agent are added in fat kettle processed, are uniformly mixed；
(2) dispersant is added in, and is quickly stirred, until forming grease structure in kettle；
(3) 50-65 DEG C of holding 5-20min is warming up to, remaining base oil and additive is added, is uniformly mixed；
(4) ground 2-3 times by three-roller；
Wherein, on the basis of the weight of lubricant composition, the dosage of lubricating base oil is 65-95 weight %, bentonite
The dosage of thickening agent is 5-35 weight %, and the dosage of dispersant is 2-10 weight %, and the dosage of additive is 0.1-15 weight %,
Additive contains the compound of structure shown in formula (I)：
In the present invention, the excellent bentonite grease composition of Wear vesistance can also be prepared with the following method, including：
The lubricating base oil of 1/2-2/3 and antioxidant are added in fat kettle processed, are uniformly mixed；Bentonite thickening agent is added in, is uniformly mixed；
Dispersant is added in, and is quickly stirred, until forming grease structure in kettle；50-65 DEG C of holding 10-30min is warming up to, is added
Remaining base oil, other additives are uniformly mixed；It is ground 2-3 times by three-roller.
In the method for the present invention, the lubricating base oil of 1/2-2/3 refers to the 1/2-2/3 for accounting for lubricating base oil total amount.
In the method for the present invention, for uniformly mixed mode without particular/special requirement, various sides commonly used in the art may be employed
Formula, for example, can stir by mixing, the speed of stirring for example can be 20-400rpm.
In the method for the present invention step (2), dispersant is added in, and is quickly stirred, until forming grease structure in kettle.Quickly
Stirring refers generally to mixing speed as 80-400rpm, and 5-30min is stirred in 80-400rpm, you can makes to form lubricating grease knot in kettle
Structure.
In the method for the present invention, dispersant commonly used in the art may be employed in dispersant, such as can be acetone or carbonic acid third
Enester.
It will be understood by those skilled in the art that when dispersant uses acetone, since the boiling point of acetone is relatively low, Yi Hui
Hair, therefore, during the heating of step (3) is kept, acetone vapors away, in the bentonite grease composition being prepared
In, do not contain acetone.Even if dispersant uses propene carbonate, the boiling point of propene carbonate is higher, can be retained in and be prepared
Bentonite grease composition in, but since the amount of dispersant is seldom, will not be to the bentonite grease that is prepared
The performance of composition generates any influence.
In the present invention, " until forming grease structure in kettle " in practical operation, to be formed with the variation of denseness to judge
Grease structure observes that denseness increases, that is, shows to form grease structure in kettle, therefore, quick to stir until denseness increases
Greatly.
In the method for the present invention, it is preferable that on the basis of the weight of lubricant composition, the dosage of lubricating base oil is 70-
90 weight %, the dosage of bentonite thickening agent are 8-30 weight %, and the dosage of additive is 0.5-10 weight %.
In the method for the present invention, on the basis of the weight of lubricant composition, the dosage of the compound of structure is excellent shown in formula (I)
Elect 0.1-10 weight % as, more preferably 1-5 weight %.
Lubricating base oil, bentonite thickening agent, additive are as previously mentioned, details are not described herein.
Embodiment
The present invention is further illustrated for following embodiment, but is not intended to limit the present invention.
In the following Examples and Comparative Examples：
The monitoring method that the reaction was complete：Thin-layer chromatography chromatography (TLC) fluorescence developing method.
Gross production rate=final product mole/aniline moles × 100%
The physico-chemical analysis method of product：Constituent content is measured by inductively coupled plasma ion emission spectroscopy method.
Structure characterization methods：Nuclear magnetic resonance method (1H hydrogen is composed,13C carbon is composed), high resolution mass spectrum.
Preparation example
Nitrogen protection is filled in the 500ml flasks with electromagnetic agitation sub (mixing speed 300rpm), adds in 150ml
Dichloromethane, then add in 0.2mol sulfur chloride, after being fully cooled in ice-water bath, add in the aniline of 0.2mol.Monitoring
Ice-water bath is removed to after the reaction was complete, 25 DEG C is placed at room temperature, after reaction system is gradually increased to 25 DEG C, is added three times 4- chlorine
Aniline is reacted, and each addition is identical, adds in 4- chloroanilines 0.15mol altogether.30ml saturations are added in after when sustained response 2 is small
Reaction is quenched in saline solution, and then reaction system is transferred in separatory funnel, respectively with 50ml distilled water and 50ml saturated salt solutions
Washing, and add in 10g anhydrous sodium sulfates dry 20min at 25 DEG C.Filtrate after filtering is evaporated off molten under 40 DEG C, 0.05MPa
Agent obtains intermediate M1.
Nitrogen protection is filled in the 500ml flasks with electromagnetic agitation sub (mixing speed 400rpm), adds in 150ml
DMF (n,N-Dimethylformamide), then add in 0.2mol dimercapto-1,3,4-thiadiazoles and 0.2mol potassium carbonate,
The potassium sulfate of 0.05mol stirs 20 minutes at 25 DEG C, is added three times above-mentioned intermediate M1, and each addition is identical, adds in altogether
Intermediate M10.12mol.Then reaction system is added in 250ml ethyl acetate, and is transferred to separatory funnel by monitoring to the reaction was complete
In, respectively with 100ml distilled water (twice) and 50ml saturated common salt water washings, and add in 15g anhydrous sodium sulfates and done at 25 DEG C
Dry 20min.Solvent is evaporated off under 40 DEG C, 0.03MPa in filtrate after filtering, obtains final product S1.It is 76% to calculate gross production rate.
The physico-chemical analysis data of product are as follows：Sulfur content, 41.3%；Nitrogen content, 13.9%.
S1 is subjected to structural characterization, respectively obtain hydrogen spectrum, carbon spectrum and high resolution mass spec spectrogram, see respectively Fig. 3, Fig. 4 and
Fig. 5.
Physico-chemical analysis data, Fig. 3, Fig. 4 and Fig. 5 from above-mentioned preparation example can be seen that S1 with the knot shown in formula (I)
Structure.
Embodiment 1
The present embodiment is used to illustrate bentonite grease composition of the present invention and preparation method thereof.
By 60 grams of 150BS base oils, (100 DEG C of viscosity are 31mm2/ s, similarly hereinafter) and 8 grams of organobentonites (are purchased from Zhe Jiangfeng
Rainbow, similarly hereinafter) add in fat kettle processed, it is uniformly mixed at 100 rpm；2.2 grams of acetone are added in, are stirred under 120rpm
30min, until denseness increases；50 DEG C are warming up to, keeps 20min；30 grams of 150BS base oils and 2 grams of S1 are added in, are stirred evenly；
2 times are ground into fat by three-roller.Properties of product are as shown in table 1.
In the lubricating grease that the present embodiment obtains, on the basis of lubricating grease weight, form and be：2 weight % of S1, organic swelling
Soil 8 weight %, 90 weight % of base oil.
Embodiment 2
The present embodiment is used to illustrate bentonite grease composition of the present invention and preparation method thereof.
By 35 grams of 500SN base oils, (100 DEG C of viscosity are 10mm2/ s, similarly hereinafter) and 29 grams of organobentonites addition fat kettles processed
In, under 150rpm, it is uniformly mixed；4 grams of acetone are added in, stir 20min at 200 rpm, until denseness increases；Heating
To 65 DEG C, 5min is kept；35 grams of 500SN base oils and 1 gram of S1 are added in, is stirred evenly；3 times are ground into fat by three-roller.Production
Moral character can be as shown in table 1.
In the lubricating grease that the present embodiment obtains, on the basis of lubricating grease weight, form and be：1 weight % of S1, organic swelling
Soil 29 weight %, 70 weight % of base oil.
Embodiment 3
The present embodiment is used to illustrate bentonite grease composition of the present invention and preparation method thereof.
By 45 grams of PAO6 synthetic hydrocarbon oils, (100 DEG C of viscosity are 10mm2/ s, similarly hereinafter) and 20 grams of organobentonites addition fat kettles processed
In, it is uniformly mixed under 130rpm；3.5 grams of acetone are added in, 25min is stirred under 150rpm, until denseness increases；Heating
To 55 DEG C, 12min is kept；30 grams of PAO6 synthetic hydrocarbon oils and 5 grams of S1 are added in, are stirred evenly；2 times are ground into fat by three-roller.
Properties of product are as shown in table 1.
In the lubricating grease that the present embodiment obtains, on the basis of lubricating grease weight, form and be：S15 weight %, organobentonite
20 weight %, 75 weight % of base oil.
Embodiment 4
The present embodiment is used to illustrate bentonite grease composition of the present invention and preparation method thereof.
By 50 grams of 150BS and 500SN mixed base oils, (100 DEG C of viscosity are 19mm2The weight ratio of/s, 150BS and 500SN
For 1：It 2, similarly hereinafter) adds in fat kettles processed with 15 grams of organobentonites, under 140rpm, is uniformly mixed；3 grams of acetone are added in,
30min is stirred under 180rpm, until denseness increases；60 DEG C are warming up to, keeps 8min；Add in 32 grams of 150BS and 500SN mixing
Base oil and 3 grams of S1, stir evenly；3 times are ground into fat by three-roller.Properties of product are as shown in table 1.
In the lubricating grease that the present embodiment obtains, on the basis of lubricating grease weight, form and be：S13 weight %, organobentonite
15 weight %, 82 weight % of base oil.
Comparative example 1
Method according to embodiment 4 prepares bentonite grease, unlike, it is added without S1.Properties of product such as 1 institute of table
Show.
In the lubricating grease that this comparative example obtains, on the basis of lubricating grease weight, form and be：15.5 weight of organobentonite
Measure %, 84.5 weight % of base oil.
Table 1
Each indication test method：Dropping point：GB/T 3498；Work cone penetration：GB/T 269；Oxidation stability：SH/T
0325；Stencil oil-dividing：SH/T 0324；Copper corrosion：GB/T 7326；Anticorrosive property：GB/T 5018；Water drenches number of dropouts：SH/T
0109；Coefficient of friction：SH/T 0847.
It will be understood by those skilled in the art that work cone penetration is smaller, the thickening performance of grease thickener is better；
Oxidation stability is smaller, and the antioxygenic property of lubricating grease is better；Stencil oil-dividing value is smaller, and the colloid stability of lubricating grease is better；
Water leaching number of dropouts is smaller, and the water resistance of lubricating grease is better；Coefficient of friction is smaller, and the antifriction performance of lubricating grease is better.
By embodiment 4 compared with comparative example 1 as can be seen that the present invention lubricating grease have better inoxidizability,
Colloid stability, water proofing property and antifriction performance.
The lubricant composition of the present invention due to containing multipurpose additive, drastically increase lubricating grease anti-attrition ability and
Oxidation resistance, while antirust agent usage amount can be reduced.There is the lubricating grease of the present invention splendid inoxidizability, colloid to stabilize
Property, water proofing property and antifriction performance etc., the harsh working condition such as high temperature, high speed, high load capacity, more water can be competent in.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that the specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (15)
1. a kind of excellent bentonite grease composition of Wear vesistance, on the basis of the weight of lubricant composition, the profit
Grease composition includes following components：The lubricating base oil of 65-95 weight %, the bentonite thickening agent and 0.1- of 5-35 weight %
The additive of 15 weight %, which is characterized in that the additive contains the compound of structure shown in formula (I)：
2. lubricant composition according to claim 1, wherein, on the basis of the weight of lubricant composition, the profit
Grease composition includes following components：The lubricating base oil of 70-90 weight %, the bentonite thickening agent and 0.5- of 8-30 weight %
The additive of 10 weight %.
3. lubricant composition according to claim 1 or 2, wherein, on the basis of the weight of lubricant composition, formula
(I) content of the compound of structure shown in is 0.1-10 weight %.
4. lubricant composition according to claim 3, wherein, on the basis of the weight of lubricant composition, formula (I) institute
The content for showing the compound of structure is 1-5 weight %.
5. lubricant composition according to claim 1 or 2, wherein, the lubricating base oil is mineral oil, vegetable oil and
At least one of synthetic oil.
6. lubricant composition according to claim 1 or 2, wherein, the bentonite thickening agent is organobentonite.
7. lubricant composition according to claim 1 or 2, wherein, the additive is also containing other antioxidant, pole
Press at least one of antiwear additive and antirust agent.
8. lubricant composition according to claim 7, wherein, the antioxidant is arylamine kind antioxidant.
9. lubricant composition according to claim 8, wherein, the antioxidant is diphenylamines, phenyl-α-naphthylamine and two
At least one of di-iso-octyldiphenylamine.
10. lubricant composition according to claim 7, wherein, the extreme pressure anti-wear additives are two thio Acidic phosphates
Zinc, two thio dialkyl amido formic acid molybdenums, two thio dialkyl amido lead formates, molybdenum disulfide, polytetrafluoroethylene (PTFE), dibutyl two
At least one of thiocarbamic acid antimony, tungsten disulfide, selenium disulfide, fluorographite, calcium carbonate and zinc oxide.
11. lubricant composition according to claim 7, wherein, the antirust agent is barium mahogany sulfonate, mahogany acid
At least one of sodium, benzothiazole, benzotriazole, decanedioic acid sodium, zinc naphthenate and alkenyl succinic acid.
12. the preparation method of lubricant composition described in claim 1, the described method includes：
(1) lubricating base oil of 1/2-2/3 and bentonite thickening agent are added in fat kettle processed, are uniformly mixed；
(2) dispersant is added in, and is quickly stirred, until forming grease structure in kettle；
(3) 50-65 DEG C of holding 5-20min is warming up to, remaining base oil and additive is added, is uniformly mixed；
(4) ground 2-3 times by three-roller.
13. the method according to claim 11, wherein, on the basis of the weight of lubricant composition, lubricating base oil
Dosage is 70-90 weight %, the dosage of bentonite thickening agent is 8-30 weight %, and the dosage of additive is 0.5-10 weight %.
14. the method according to claim 12 or 13, wherein, on the basis of the weight of lubricant composition, shown in formula (I)
The dosage of the compound of structure is 0.1-10 weight %.
15. the method according to claim 11, wherein, on the basis of the weight of lubricant composition, structure shown in formula (I)
Compound dosage be 1-5 weight %.
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| CN109913296B (en) * | 2019-03-06 | 2022-04-29 | 江苏龙蟠科技股份有限公司 | Low-friction-coefficient assembly lubricating paste and preparation method thereof |
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